HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshooting
| 1.VEHICLE BROUGHT TO WORKSHOP |
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| 2.INSPECT BATTERY VOLTAGE |
- Standard voltage:
- 11 to 14 V
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| 3.INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN) |
Using the intelligent tester, check if the Multiplex Communication System (MPX) is functioning normally.
- Result:
Result
Proceed to
MPX DTC is not output
A
MPX DTC is output
B
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| 4.BASIC INSPECTION |
Turn the ignition switch ON.
Check whether or not the radio receiver turns on.
- Result:
Result
Proceed to
Radio receiver turns on
A
Radio receiver does not turn on
B
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| 5.CHECK FOR DTC |
Check for DTCs and note any codes that are output.
Delete the DTCs.
Recheck by simulating the operation indicated by the DTC.
- HINT:
- If the system cannot enter the diagnosis mode, inspect each AVC-LAN communication signal and repair or replace problem parts.
- Even if the malfunction symptom is not confirmed, check the DTCs. This is because the system stores past DTCs.
- Check and clear past DTCs. Then check for DTCs.
- Result:
Result
Proceed to
DTC is output again
A
DTC is not output
B
- If the system cannot enter the diagnosis mode, inspect each AVC-LAN communication signal and repair or replace problem parts.
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| 6.DIAGNOSTIC TROUBLE CODE CHART |
- Find the output code on the diagnostic trouble code chart (Click here).
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| 7.PROBLEM SYMPTOMS TABLE |
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Refer to the problem symptoms table (Click here).
- Result:
Result
Proceed to
Fault is not listed in problem symptoms table
A
Fault is listed in problem symptoms table
B
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| 8.OVERALL ANALYSIS AND TROUBLESHOOTING |
Terminals of ECU (Click here).
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| 9.ADJUST, REPAIR OR REPLACE |
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| 10.CONFIRMATION TEST |
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